82720831 divided by 121 
The aim is to understand the frequency of 121 in 82720831.

Going ahead to step 1:
The number 121 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (2) from the dividend, add it to 8, then carry on: 82 / 121

Going ahead to step 2:
121 can be fit into 82 0 times, resulting in a remainder of 82.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 82 after subtracting 0 from 82.
Append the next digit (7) from the dividend to 82 and continue with: 827 / 121

Advancing to step 3:
121 goes into 827 6 times with a remainder of 101.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtract 726 from 827 to get 101.
Bring next digit (2) of the dividend behind the 101 and repeat the process: 1012 / 121

Advancing to step 4:
121 can be fit into 1012 8 times, resulting in a remainder of 44.
Write down 8 as next digit of the result. 
Result so far: 68.0
Subtract 968 from 1012 to get 44.
Take the next digit (0) from the dividend and append it to 44, then repeat: 440 / 121

Step 5:
121 can be fit into 440 3 times, resulting in a remainder of 77.
The number 3 becomes the next digit in our result. 
Result so far: 683.0
Deduct 363 from 440 and we're left with 77.
Append the next digit (8) from the dividend to 77 and continue with: 778 / 121

Step 6:
When dividing 778 by 121, we get 6 with a remainder of 52.
The number 6 becomes the next digit in our result. 
Result so far: 6836.0
Deduct 726 from 778 and we're left with 52.
Grab the next digit (3) from the dividend, add it to 52, then carry on: 523 / 121

Advancing to step 7:
When dividing 523 by 121, we get 4 with a remainder of 39.
The number 4 becomes the next digit in our result. 
Result so far: 68364.0
If we take 484 away from 523, we end up with 39.
Include the next digit (1) from the dividend after 39, then repeat: 391 / 121

Going ahead to step 8:
When dividing 391 by 121, we get 3 with a remainder of 28.
Record the quotient 3 as the next digit in the result. 
Result so far: 683643.0
The remainder is 28 after subtracting 363 from 391.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 9:
The number 121 fits into 280 2 times, leaving a remainder of 38.
The next digit of our result is 2. 
Result so far: 683643.2
The remainder is 38 after subtracting 242 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 10:
If we divide 380 by 121, we get 3 and a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 683643.23
Subtracting 363 from 380 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 11:
121 can be fit into 170 1 times, resulting in a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 683643.231
If we take 121 away from 170, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 12:
490 divided by 121 is 4 with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 683643.2314
Subtract 484 from 490 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 13:
121 goes into 60 0 times with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 683643.2314
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 14:
121 goes into 600 4 times with a remainder of 116.
Use 4 as the next digit of our solution. 
Result so far: 683643.231404
Subtract 484 from 600 to get 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

On to step 15:
When dividing 1160 by 121, we get 9 with a remainder of 71.
Write down 9 as next digit of the result. 
Result so far: 683643.2314049
Subtract 1089 from 1160 to get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Let's proceed to step 16:
When dividing 710 by 121, we get 5 with a remainder of 105.
Record the quotient 5 as the next digit in the result. 
Result so far: 683643.23140495
Subtract 605 from 710 to get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Our division results in 683643.23140495 with a remaining 1.05e-07.